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Last Updated On [03-11-2023]

A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when

(a)

R = 1000 r

(b)

R = r

(c)

R = 2 r

(d)

R = 0.001 r


Question ID - 51170 :-

A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when

(a)

R = 1000 r

(b)

R = r

(c)

R = 2 r

(d)

R = 0.001 r

1 Answer
5876 Votes
3537

Answer Key : (b) -

For maximum power in external resistance, Internal resistance = External resistance

⇒ R = r



Next Question :

A body of mass m1 moving with an unknown velocity of v1 , undergoes a collinear collision with a body of mass m2 moving with a velocity v2 . After collision, m1 and m2 move with velocities of v3  and v4 , respectively. If m2 = 0.5 m1 and v3 = 0.5 v1, then v1 is  

(a)

(b)

 v4 – v2

(c)

v4 + v2

(d)


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