Question

Five dry cells each of 1.5 volt have internal resistances of of 0.2, 0.3, 0.4, 0.5 and 12 ohms when connected in series, what current will this 5 sells furnished through 10 ohm resistance

Answer 1

R

eq

=r

1

+r

2

+r

3

+r

4

+r

5

+R=0.2+0.3+0.4+0.5+0.6+1

R

eq

=3Ω

$$$E_{eq}=5E=7.5V$

I=

R

eq

E

eq

=

3

7.5

⟹I=2.5A

When battery is shorted , no current flows through R.

Equivalent resistance becomes R

eq

=r

1

+r

2

+r

3

+r

4

+r

5

⟹R

eq

=3Ω

Current=I=

R

eq

E

eq

⟹=I=

2

7

=3.5A

Answer-(D)

Answer 2

Answer:

ANSWER IS 2A

Explanation:

IT IS THE CORRECT ANSWER BECAUSE IT IS COME IN MY BOARD EXAM

PLZ MARK ME BRILLIANT

ANSWER IS 100%CORRECT

LIKE AND VOTE