A hot plate of an electric oven connected to a
220 V line has two resistance coils A and B,
each of 24 22 resistance, which may be used
separately in series or in parallel. What are the
currents in three cases?
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A hot plate of an electric oven connected to a
220 V line has two resistance coils A and B,
each of 24 22 resistance, which may be used
separately in series or in parallel. What are the
currents in three cases?
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Explanation:
in case.1 coils are used separately
V = IR
220 = 24× 1
I = 9.167
IN CASE 2 : COILS ARE IN SERIES
R = R1 + R2
24+24 = 48 OHM
V= I × R
220 = 48 × I
I = 4.583
IN CASE III : COILS IN PARALLEL
1/R = 1/ R1 + 1/R2
THEN. R = 12
V = IR
220 = 12 × 1
I = 18.334
HENCE PROVED
Answer:
sorry I didn't know it's answer