Physics Past Questions and Answers

A cell of e.m.f 12V and internal resistance 4Ω is connected to an external resistor of resistance 2Ω. Find the current flow.

The diagram above shows a balanced metre bridge, the value of x is

Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them.

What is the total current in the circuit?

In the diagram above, a 200 W bulb is lighted by a 240 V a.c mains supply. If 1kwh is sold at N40, the cost of keeping the bulb lighted for a day is

In the diagram above, if the south-poles of two magnets strokes steel bar, the polarities at T and V will respectively be