What is the potential of point D relative to point C in in the circuit below?
+3.0 V.
+2.0 V.
+4.0 V.
+6.0 V.
A p.d. of 12 V is connected between P and Q. What is the p.d. between X and Y?
0 V.
4 V.
6 V.
8 V.
Determine the current in the 7 ohms resistor in in the figure below:
1.3 A.
1.6 A.
0.28 A.
2.1 A.
