Question

A hot plate connected to a 220 volt line has two resistance coils a and b each of 22 ohm resistance calculate the amount of electric current flowing when these coil are used individually connected in series and connected in parallel​

Answer 1

Answer..

voltage, V = 220 V

• Here Resistance of one coil, R =24

• Coils are separately used

• Ohm’s law, V=I1R1

• I1 is the current flowing through the coil

• I1=V/R1=220/24=9.166A

• ∴ current flow of coil when used separately is 9.16 A.

• Coils are connected in series

• R2=24 +24 =48

• I2=V/R2=220/48=4.58A

• current flowing through the circuit is 4.58A

• Coils are connected parallel

• I3=V/R3=220/12=18.33A

• flowing of the parallel circuit is 18.33A

question solved..

Answer 2

Answer:

A) used individually = 10A

B) Connected in series = 5A

C) Connected in Parallel = 20A

Explanation:

GIVEN = 220V

            R1 = 22Ω

            R2 = 22Ω

USED INDIVIDUALLY

 V = IR

  I = V/R

  I = 220/22

  I = 10Ω

USED SERIES

R= R1+R2

  =44Ω

 I = V/R

I = 220/44

I = 5Ω

USED PARALLEL

1/R = 1/R1 + 1/R2

  R = 11Ω

I = V/R

I = 220/11

I = 20Ω