19 ohm resistor, and across the parallel resistors
14 Calculate the length of a constantin wire of
diameter 0.6 mm and resistivity 1.1 x 10-6
Sem required to construct a standard resistor of
resistance 35 92.
(SCIGCE)
15 A battery of three cells in series, each of e. m.f.
2 V and internal resistance 0.5 N is connected
to a 2 12 resistor in series with a parallel
combination of two 3 12 resistors. Draw the
circuit diagram and calculate:
the effective external resistance
b. the current in the circuit
the lost volts in the battery
d. the current in one of the 3 12 resistors.
(SC/GCE)
of a cell is greater than
a.
C.