4.3.2. Series and parallel circuits
A subsection of Physics, 0625, through 4. Electricity and magnetism
Listing 10 of 235 questions
The two circuits shown in each contain two resistors and a battery. Complete the statement under each circuit. R1 R2 R4 R3 Resistors R1 and R2 are Resistors R3 and R4 are connected in ………………………… connected in ………………………… A student connects the circuit shown in . The resistance of the 12 V battery is so low that it can be ignored. 280 Ω 12 V 200 Ω A B Calculate the total resistance in the circuit. resistance = Ω Calculate the current delivered by the battery. current = Calculate the potential difference (p.d.) across the 200 Ω resistor. p.d. = V Describe how the student could check whether the p.d. across the 200 Ω resistor is the same as you have calculated. Include the name of the instrument he would use for this.
0625_w09_qp_2
THEORY
2009
Paper 2, Variant 0
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A wire of length 2.0 m and cross-sectional area 0.40 mm2 has a resistance of 0.14 Ω. Calculate the resistance of another wire of the same material of length 3.0 m and cross-sectional area 0.90 mm2. resistance = Ω A student is designing a digital electronic circuit. shows her partly completed design. A C O D B Table 8.1 is a truth table. Complete the columns in this truth table to show the values for input B in the circuit. Table 8.1 Input A Input B Point C Point D Output O The column O in the truth table shows the desired output values for the circuit. On , complete the circuit to achieve these output values. Label any gate used.
0625_w19_qp_42
THEORY
2019
Paper 4, Variant 2
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A car windscreen is covered in condensation (small droplets of water). Thermal energy is used to remove the droplets of water. The thermal energy is provided by three resistors on the windscreen. shows two possible circuits for the three resistors. The three resistors are identical. Circuit A Circuit B 12 V car battery 12 V car battery Describe two advantages of using Circuit B. Describe, in terms of the water particles, the process by which the water droplets are removed from the car windscreen using the heater. shows a circuit containing two resistors, P and Q. The circuit is powered by a 12 V battery. 12 V 90 Ω P 70 Ω Q Calculate the current in resistor Q. current = Calculate the energy transferred electrically when the current calculated in is present in resistor Q for 5 minutes. energy = Energy is transferred from the battery by the electrical current. State the energy store in the battery. Calculate the total resistance of the circuit. total resistance =
0625_w24_qp_43
THEORY
2024
Paper 4, Variant 3
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Questions Discovered
235