Date | May 2017 | Marks available | 1 | Reference code | 17M.1.HL.TZ1.33 |
Level | Higher level | Paper | Paper 1 | Time zone | 1 |
Command term | Question number | 33 | Adapted from | N/A |
Question
What are the units of magnetic flux and magnetic field strength?
Markscheme
B
Examiners report
Syllabus sections
- 22M.1.HL.TZ2.35: A conducting bar with vertices PQRS is moving vertically downwards with constant velocity v...
- 17N.2.HL.TZ0.2c: The cable between the satellites cuts the magnetic field lines of the Earth at right...
- 22M.2.HL.TZ1.8c.i: The switch is closed at time t = 0. Explain how the voltmeter reading varies after the switch...
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22M.2.HL.TZ2.8a.ii:
State the fundamental SI unit for your answer to (a)(i).
- 17M.1.HL.TZ1.36: A conducting square coil is placed in a region where there is a uniform magnetic field. The...
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22M.1.HL.TZ1.34:
The graph shows the variation of magnetic flux ΦΦ in a coil with time tt.
What represents the variation with time of the induced emf εε across the coil?
- 17N.2.HL.TZ0.2e: The magnetic field strength of the Earth is 31 μT at the orbital radius of the...
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17N.1.HL.TZ0.34:
The plane of a coil is positioned at right angles to a magnetic field of flux density B. The coil has N turns, each of area A. The coil is rotated through 180˚ in time t.
What is the magnitude of the induced emf?
A. BAtBAt
B. 2BAt2BAt
C. BANtBANt
D. 2BANt2BANt
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18N.1.HL.TZ0.33:
A ring of area S is in a uniform magnetic field X. Initially the magnetic field is perpendicular to the plane of the ring. The ring is rotated by 180° about the axis in time T.
What is the average induced emf in the ring?
A. 0
B. XS2TXS2T
C. XSTXST
D. 2XST2XST - 19N.1.HL.TZ0.33: X and Y are two plane coils parallel to each other that have a common axis. There is a...
- 19N.1.HL.TZ0.34: A coil is rotated in a uniform magnetic field. An alternating emf is induced in the coil....
- 19M.1.HL.TZ2.29: A circular coil of wire moves through a region of uniform magnetic field directed out of the...
- 17M.2.HL.TZ1.8a: State Faraday’s law of induction.
- 17M.2.HL.TZ1.8b.i: Explain, using Faraday’s law of induction, how the transformer steps down the voltage.
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17M.1.HL.TZ2.34:
Three conducting loops, X, Y and Z, are moving with the same speed from a region of zero magnetic field to a region of uniform non-zero magnetic field.
Which loop(s) has/have the largest induced electromotive force (emf) at the instant when the loops enter the magnetic field?
A. Z only
B. Y only
C. Y and Z only
D. X and Y only
- 17M.1.HL.TZ2.33: The diagram shows a bar magnet near an aluminium ring. The ring is supported so that it is...
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21N.2.HL.TZ0.5b.ii:
Sketch, on the axes, a graph to show the variation with time of the magnitude of the emf induced in the loop.
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19M.1.HL.TZ1.35:
The graph below shows the variation with time of the magnetic flux through a coil.
Which of the following gives three times for which the magnitude of the induced emf is a maximum?
A. 0, T4T4, T2T2
B. 0, T2T2, T
C. 0, T4T4, T
D. T4T4, T2T2, 3T43T4
- 18M.1.HL.TZ1.33: Two identical circular coils are placed one below the other so that their planes are both...
- 22M.2.HL.TZ2.8b.i: Explain why the graph becomes negative.
- 22M.2.HL.TZ2.8b.ii: Part of the graph is above the t-axis and part is below. Outline why the areas between the...
- 22M.2.HL.TZ2.8c: Predict the changes to the graph when the magnet is dropped from a lower height above the coil.
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20N.1.HL.TZ0.35:
A rectangular coil rotates at a constant angular velocity. At the instant shown, the plane of the coil is at right angles to the line ZZ'ZZ'. A uniform magnetic field acts in the direction ZZ'ZZ'.
What rotation of the coil about a specified axis will produce the graph of electromotive force (emf) EE against time tt?
A. Through π2π2 about ZZ'ZZ'
B. Through ππ about YY'YY'
C. Through π2π2 about XX'XX'
D. Through ππ about XX'XX'
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20N.2.HL.TZ0.9a:
Explain, by reference to Faraday’s law of induction, how an electromotive force (emf) is induced in the coil.
- 21M.1.HL.TZ1.34: The conservation of which quantity explains Lenz’s law? A. Charge B. Energy C. Magnetic...
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21M.1.HL.TZ2.35:
A magnet connected to a spring oscillates above a solenoid with a 240 turn coil as shown.
The graph below shows the variation with time tt of the emf across the solenoid with the period, TT, of the system shown.
The spring is replaced with one that allows the magnet to oscillate with a higher frequency. Which graph shows the new variation with time tt of the current II in the resistor for this new set-up?
- 21M.2.HL.TZ2.7b: A pendulum with a metal bob comes to rest after 200 swings. The same pendulum, released from...
- 18M.1.HL.TZ2.33: The current I flowing in loop A in a clockwise direction is increasing so as to induce a...
- 18M.1.HL.TZ2.34: A rectangular flat coil moves at constant speed through a uniform magnetic field. The...
- 21M.1.HL.TZ1.33: A conducting ring encloses an area of 2.0 cm2 and is perpendicular to a magnetic field...
- 19M.2.HL.TZ2.10a: While the magnet is moving towards the ring, state why the magnetic flux in the ring is...
- 19M.2.HL.TZ2.10b: While the magnet is moving towards the ring, sketch, using an arrow on Diagram 2, the...
- 19M.2.HL.TZ2.10c: While the magnet is moving towards the ring, deduce the direction of the magnetic force on...
- 21N.1.HL.TZ0.33: A small magnet is released from rest to drop through a stationary horizontal conducting...
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21N.2.HL.TZ0.5b.i:
Sketch, on the axes, a graph to show the variation with time of the magnetic flux linkage ΦΦ in the loop.
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21N.2.HL.TZ0.5a:
Show that the speed of the loop is 20 cm s−1.
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21N.2.HL.TZ0.5c.i:
There are 85 turns of wire in the loop. Calculate the maximum induced emf in the loop.
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22M.2.HL.TZ1.8c.ii:
Determine the average emf induced across coil Y in the first 3.0 ms.
- 22M.2.HL.TZ2.8a.i: Write down the maximum magnitude of the rate of change of flux linked with the coil.