Physics

Question 1

1Electric field strength is measured in

Easy

A. N/C (or V/m) B. N/m C. C/N D. J/s

Question 2

2A charged particle moving at right angles to a magnetic field follows a

Medium

A. circular path B. straight line C. zigzag path D. parabola always

Question 3

3An electron accelerated through 100 V gains kinetic energy of

Hard

A. 100 J B. 1.6 × 10⁻¹⁹ J C. 1.6 × 10⁻¹⁷ J D. 1.6 × 10⁻²¹ J

Question 4

4A transistor has three terminals called the

Easy

A. anode, cathode and grid B. live, neutral and earth C. source, drain and fuse D. emitter, base and collector

Question 5

5Field lines of an electric field point from

Easy

A. north to south B. south to north C. positive to negative charges D. negative to positive charges

Question 6

6Electric field lines point

Easy

A. from negative to positive charges B. in circles around charges C. in no particular direction D. from positive to negative charges

Question 7

7A charged particle in a uniform electric field experiences

Easy

A. a varying force B. a constant force C. only a magnetic force D. no force

Question 8

8The force on a 2 C charge in a field of 50 N/C is

Easy

A. 52 N B. 0.04 N C. 100 N D. 25 N

Question 9

9A cathode ray oscilloscope can be used to

Easy

A. store charge B. display and measure waveforms C. increase voltage D. produce gamma rays

Question 10

10The magnetic field lines around a straight wire carrying current are

Easy

A. straight lines away from the wire B. straight lines parallel to the wire C. absent D. concentric circles around the wire