Physics

Physics past questions and answers from WAEC and JAMB

Page 30

The primary of a transformer has 100 turns and its secondary has 200 turns. If the voltage at the primary is $100 V$ , determine the voltage at the secondary.

$50 V$

$100 V$

$200 V$

$400 V$

The energy in the nucleus of atoms produced heat which can be used to generate

Mechanical energy

Electrical energy

Potential energy

Kinetic energy

Which of the following cases cannot produce total internal reflection?

glass to water

kerosene to air

air to water

water to ice

Which of the following are true of atoms?

Atoms are indestructible

The number of protons equals the number of electrons

Atoms of different substances have different weights

All of the above

First