Question

An electric heater is connected to the 230 V mains supply. A current of 8A flows through the heater.; (a) How much charge flows around the circuit each second?; (b) How much energy is transferred to the heater each second?

Answer 1

Explanation:

(a).

A/Q

V=230V , I=8A, t=1s

then q=?

We know that guys

I=q/t

then q=It

=8×1

=8q Answer.

(b).

I=8A, V=230V, T=1S THEN

R=?, Q=?

R=V/I

R=230/8

R=2.87ohm

Q=i^2rt

=68×2.87×1

=195.16J Answer.