Question

28. Two resistances R, and R, are connected with a cell in parallel If currents flow in resistances are i1 and i2, and heat evolved per second are H1 and H2 then:
a. h1/h2 eqal to r1/r2
b. h1/h2 eqal to r2/r1
c. h1/h2 eqal to i1/i2
d. h1/h1 eqal to i2/i1 with derivation of figure
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Answer 1

Answer:

Heat produced, H=

R

V

2

t

both resistances are connected in parallel combination that's why both will get equal voltage drop hence heat produced will directly depend upon resitance value of them.

i.e. H∝

R

1

so

H

2

H

1

=

R

1

R

2

..