This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
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Here's the solution to your circuit problem: 7.1 State Ohm's law in words. Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature and other physical conditions remain constant. 7.2 The reading on the ammeter is 5.25 A. 7.2.1 Calculate the total external resistance of the circuit. Step 1: Calculate the equivalent resistance of the parallel combination of 4.5 Ω and 1.5 Ω (R_p). R_p = (R₁ × R₂)/(R₁ + R₂) R_p = (4.5 Ω × 1.5 Ω)/(4.5 Ω + 1.5 Ω) R_p = (6.75 Ω²)/(6.0 Ω) R_p = 1.125 Ω Step 2: Calculate the total external resistance (R_ext) by adding the series resistors. R_ext = R_p + 3 Ω + 6 Ω R_ext = 1.125 Ω + 3 Ω + 6 Ω R_ext = 10.125 Ω 7.2.2 Calculate the reading on voltmeter V₁. Step 1: Use Ohm's Law for the external circuit. V₁ = I × R_ext Given I = 5.25 A (ammeter reading) R_ext = 10.125 Ω (from 7.2.1) Step 2: Substitute values and calculate V₁. V₁ = 5.25 A × 10.125 Ω V₁ = 53.15625 V 7.2.3 How does the reading on voltmeter V₂ compare to the reading on voltmeter V₁? Choose from SMALLER THAN, EQUAL TO or GRE