Question

A hot plate of an electric oven connected to a 220v line has two resistance coil A and B each of 12ohms resistance,which may be used separately in series or parallel.where are the current in all the cases 3

Answer 1

Case I: 9.17 Amperes

Case II: 4.58 Amperes

Case III: 18.33 Amperes

Step-by-step explanation:

Given:

Voltage(V) = 220 Volts

Resistance of Coil A, Ra = 24 ohm

Resistance of Coil B, Rb = 24 ohm

Case I: When coils are used separately.

Applying the formula,

We get,

Therefore, the current flowing in this circuit is 9.17 Amperes.

Case II: When coils are used in series.

Equivalent Resistance,

R = 24 + 24 = 48 ohms

Applying Formula V = IR,

Therefore the current flowing is 4.58 Amperes.

Case III: When coils are used in parallel.

Equivalent Resistance,

Current Flowing,

Therefore, the current flowing is 18.33 Amperes.