Physics · Oct / Nov 2020 · Paper 41 · Question 8
0625
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8(a)[2]
(related to) energy supplied in driving charge in a circuit / conductor or property of source / battery / cell / power supply energy supplied per / to unit charge or energy transferred to electrical energy or from other form of energy or energy in driving charge around a complete circuit
8(b)(i)[1]
(I = V ÷ R = 240 ÷ 30 =) 8.0 A
8(b)(ii)[2]
(P =) VI or 240 × 8.0
1900 W
8(b)(iii)[4]
half (the size)
(equal voltage / p.d. / e.m.f. and) resistance is twice the size or I and R are inversely proportional
(fuse rating =) 13 A / 14 A / 15 A / 16 A / 17 A / 18 A / 19 A
total current is 12.1 A
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