Lakhmir Singh and Manjit Kaur Solutions for Chapter: Electricity, Exercise 15: Questions Based on High Order Thinking Skills (HOTS)

An electric room heater draws a current of $2.4 \mathrm{A}$ from the $120 \mathrm{V}$ supply line. What current will this room heater draw when connected to a $240 \mathrm{V}$ supply line?

Name the electrical property of a material whose symbol is “omega”.

The graph between $V$ and $I$ for a conductor is a straight line passing through the origin.
(a) Which law is illustrated by such a graph?
(b) What should remain constant in a statement of this law?

A p.d. of $10 \mathrm{V}$ is needed to make a current of $0.02 \mathrm{A}$ flow through a wire. What p.d. is needed to make a current of $250 \mathrm{mA}$ flow through the same wire?

A current of $200 \mathrm{mA}$ flows through a $4 \mathrm{k\Omega }$ resistor. What is the p.d. across the resistor?