CAIE IGCSE Physics Force Field and Induced Current Directions

Practise determining the induced-current direction from a conductor's motion and magnetic field, then predict how reversing motion or field reverses it.

Exam points

apply Fleming's right-hand rule to relate magnetic field, conductor motion and induced current
use north-to-south field direction and a shown current arrow to determine the rod's motion
reverse the motion or magnetic field to reverse the current and galvanometer deflection

[Maximum number: 3]

(a)

Fig. 9.3 shows the coil ABCD of the a.c. generator between two magnetic poles.

Fig. 9.3

[ 3 ]

(i)

On Fig. 9.3, draw a straight arrow to indicate the direction in which side AB of the coil is moving. Label this arrow M.

[ 1 ]

(ii)

Deduce the direction of the current induced in side AB of the coil and explain your reasoning.

[ 2 ]

All question bank results loaded

4.5.1.5—And use the relative directions of question 1

Question (a)

Question (i)

Question (ii)