What steady current can be drawn from an accumulator of capacity $80 A h$ ?

4 A

for

20 h r s

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

40 A

for

6 h r s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

20 A

for

5 h r s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 A

for

100 h r s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $4 A$ for $20 h r s$
given capacity is 80Ah which is unit of charge accumulated. So either we can draw a 80A current for 1 hour or less current for longer time period.
$I = \frac{d Q}{d t} = \frac{Q}{t}$
for option A lets calculate total charge drawn from source -
$Q = 4 A \times 20 h r = 80 A h$
hence option A is correct.

Suggest Corrections

Similar questions

When a person walks at $\frac{4}{5}$ th of his usual speed, he is late by 5 hrs. The usual time is

A person walks at 10 kmph for 3 hrs and at 8kmph for 6 hrs. What is the average speed?

20 A

10 s

Join BYJU'S Learning Program