Question

10.Calculate the power rating of the heater coil when used on 220V supply taking 5 Amps.​

Answer 1

Answer:

From ohms law,

R=220/5=44

P=I^2R=5×5×44

=220×5=1100

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Answer 2

Given :-

• Potential difference of heater (V) = 220 V
• Current (I) = 5 A

To find :-

• Power rating of the heater coil

Solution :-

As we know that

→ P = VI

→ P = 220 × 5

→ P = 1100 W

Hence,

• Power rating of the heater coil is 1100W