In the circuit above R is a resistor whose resi... - WAEC Physics 1991 Question
In the circuit above R is a resistor whose resistance increases with increases with increase in temperature L1 and L2 are identical lamps. If the temperature of R increases
A
L1 becomes brighter and L2 becomes dimmer
B
L1 becomes brighter and L2 does not change
C
L2 becomes dimmer and L1 does not change
D
L1 becomes dimmer and L2 does not change
correct option: a
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