The figure below shows three resistors of values 2Ω, 4Ω and 6 Ω connected in series to a 6V dry cell. (a) What is the effective resistance of the three resistors?
0.92 Ω
1.1 Ω
10Ω
12Ω
(b) What is the current measured by (i) ammeter A1; (ii) ammeter A2?
3 A; 0.6 A
0.6 A; 3 A
3 A; 3 A
0.5 A; 0.5 A
(c) What is the potential difference across each resistor?
B
C
D
A
The figure below shows three resistors of values 1 Ω, 3 Ω and 6 Ω connected in parallel to a 6V dry cell. (a) What is the effective resistance of the three resistors?
0.10Ω
0.67Ω
1.5Ω
(b) What is the potential difference across each resistor?