Skip to content

Course home

A Level
Physics AQA
Question bank

Magnetic fields (A-level only)

Easy Medium Hard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

Question 18

A direct current $I$ dissipates thermal power $P$ in a calibration resistor of resistance $R$ .

In a second setup, an alternating current with a peak current of $3 I$ is passed through a different resistor of resistance $23R\frac{2}{3}R$ .

What is the average power dissipated in this second resistor?

$P$

$3 P$

$92P\frac{9}{2}P$

$6 P$

Magnetic fields (A-level only) Questions

A Level
Physics
Magnetic fields (A-level only)