Physics Past Questions and Answers

The parts of a bar magnet at which the magnetic effect is strongest are called the

A resistance wire of length 2 m and of uniform cross-sectional area 5.0 x 10^-7 m² has a resistance of 2.2 Ω Calculate its resistivity

Magnetic flux density is defined as the

The voltage and current in the primary of a transformer are 200V and 2Arespectively. lf the transformer is used to light ten 12 V, 30 W bulbs, calculate its efficiency.

In a uniform electric field, the magnitude of the force on a charge of 0.2 C is 4N. Calculate the electric field intensity