Embibe Experts Solutions for Chapter: Electricity, Exercise 1: Exercise

A microampere is a unit used to measure electric current.

Three equal resistances, when combined in series have an equivalent resistance of $90 \mathrm{\Omega }$. Their equivalent resistance when combined in parallel will be -

Consider the following statements.

(A) : In series connection, same current flows through each element.

(B) : In parallel connection, same potential difference gets applied across each element.

Which of the following is the correct one?

The SI unit of electrical conductivity is -

If $1.5 \mathrm{A}$ current is flowing through the wire of resistance $1.5 \mathrm{\Omega }$, then the potential difference between ends of the wire will be

Name the device used to measure electric current.

Two identical heating coils are first connected in series and then in parallel across the same potential difference. The ratio of heat generated in series to that of parallel would be -

An electric motor takes $5 \mathrm{A}$ from a $220 \mathrm{V}$ electric source. The power of the motor is