Physics · Oct / Nov 2021 · Paper 42 · Question 10
0625
As printed in the paper
Show the answer and mark scheme
10(a)[1]
OR (gate)
10(b)[2]
0
1
10(c)[2]
prevents electrocution OR metal case cannot become live OR metal case always at earth potential / voltage
(if) live wire touches metal case
10(d)(i)[2]
if current too high
fuse melts
10(d)(ii)[2]
13 A (circled)
fuse rating/value above but near (to) normal operating current/ 10 A
OR
fuse rating/value slightly higher (than) normal operating current /10A
OWTTE
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