Answer to Question #113632 in Electricity and Magnetism for Hetisani Sewela

Question

The drawing below shows an ele
tri

ir
uit, where resistors are
onne
ted to a battery. If the
urrent
in the 8.0 Ω resistor is 0.5 A,
al
ulate:
(a) the equivalent resistan
e,
(b) the
urrent in ea
h resistor,
(
) the total
urrent owing in the
ir
uit,
(d) the voltage of the battery,
(e) the ele
tri
power of the
ir
uit.

Answer 1

As the diagram not given in the question,

but here resistance $(R)=8.0 \Omega$

Current in the circuit $(i)=0.5A$

the potential of the battery

$V= iR$

$\Rightarrow V = 8\times 0.5 = 4V$

If all are connected in series then the current in all the resistance will be same.

Electrical power $(P)=VI$

$=4\times 0.5 = 2watt$