Question

dry cell can supply charge of 50 C. If the current draws from the cell is 750 uA, find the time in which the cell completely
discharges.​
plese give mi answer​

Answer 1

Given :

Charge supplied by the cell = 50 C

Current draws from the cell = 750 uA

To find :

Time in which the cell completely discharges.

Solution :

First of all we have to convert uA into A

1 uA = 1/1000000 A

750uA = 750 × 1/1000000 = 0.00075 A

If a charge of Q coulombs flows through a conductor in time t second, then the magnitude I of the electric current flowing through it is given by,

I = Q/t

where,

• I denotes current
• Q denotes charge
• t denotes time

by substituting all the given values in the formula,

➠ I = Q/t

➠ 0.00075 = 50/t

➠ t = 50/0.00075

➠ t = 5000000 / 75

➠ t = 66666.66 sec$.$

thus, the time in which the cell completely discharges is 66666.66 sec.

Answer 2

Charge supplied by the cell = 50 C

Current draws from the cell = 750 uA

To find :

Time in which the cell completely discharges.

Solution :

First of all we have to convert uA into A

1 uA = 1/1000000 A

750uA = 750 × 1/1000000 = 0.00075 A

If a charge of Q coulombs flows through a conductor in time t second, then the magnitude I of the electric current flowing through it is given by,

I = Q/t

where,

• I denotes current
• Q denotes charge
• t denotes time

by substituting all the given values in the formula,

➠ I = Q/t

➠ 0.00075 = 50/t

➠ t = 50/0.00075

➠ t = 5000000 / 75

➠ t = 66666.66 sec..

thus, the time in which the cell completely discharges is 66666.66 sec.