Question

(c) Fig. 9.2 shows a circuit.
6V
1
B
Fig. 9.2

Component A is not emitting light. It only emits light when the p.d. across it is greater than 1V.
(i) A change to the environment around component B causes component A to emit light.
State the environmental change.
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Answer 1

Answer:

6V shows a circuit in picture