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An electric heater is connected to the 230V 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?
An electric heater is connected to the 230V 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?
CBSE | Class 10 | Electricity | Lakhmir Singh | Physics
An electric heater is connected to the 230V 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?

Given that,

Potential difference $=230 \mathrm{~V}$

Current, I $=8 \mathrm{~A}$

  1. a) $I=Q / t$

$8=\mathrm{Q} / 1$

$\mathrm{Q}=8 \times 1=8 \mathrm{C}$

Hence, the current is $8 \mathrm{C}$.

  1. b) We already know that energy transferred = work done

Potential difference = work done/charge moved

$230=$ work done/8

Hence, work done $=230 \times 8=1840 \mathrm{~J}$

i

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