1.The diagrams show four arrangements of resistors.Which arrangement has the smallest total resistance? A B C D 2.The potential divider shown is connected across a constant 12 V supply. When R has a value of 20 ƒ¶, the voltmeter readings are equal. How do these readings change when the value of R is reduced to 10 ƒ¶? A B C D 3.A circuit contains two resistors connected in parallel with a battery. Which of the following statements about the currents at P, Q and R is true? A. The current at P is the greatest. B. The current at Q is the greatest. C. The current at R is the greatest. D. The current is the same at points P, Q and R. 4.The diagram shows a circuit containing two ammeters and three resistors. Which of the ammeters will show the current in resistor R2? A. ammeter X only B. ammeter Y only C. both ammeter X and ammeter Y D. neither ammeter X nor ammeter Y 5.Which copper wire would have the smallest resistance? A. a long, thick wire B. a long, thin wire C. a short, thick wire D. a short, thin wire 6.The reading on the ammeter in the circuit is 1.0 A. A second ammeter is connected in the circuit. It also reads 1.0 A. At which labelled point is it connected? A B C D 7.The diagram shows an electric circuit containing three meters, X, Y and Z, all connected correctly What are meters X, Y and Z? A B C D 8.. The diagram shows a potential divider circuit with two identical lamps L_{1}and L_{2}. The contact K is halfway between X and Y and the lamps are equally bright. What will happen to the brightness of the lamps when contact K is moved a short distance towards X? A B C D 9.The diagrams show four arrangements of resistors. Which arrangement has the LARGEST total resistance? A B C D 10. A resistor in a circuit has a value of resistance of 3.0Ω. In 20 s, a charge of 10 C passes through the resistor. What is the potential difference across the resistor? A 0.67 V B 1.5 V C 6.0 V D 30 V Loading … Question 1 of 10