Find the equivalent resistance for the circuit in the figure if R = 3 ohms. Express your answer in terms of nearest whole number or fraction. (Example: 3/7 ohms)
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- Why should you not connect an ammeter directly across a voltage source as shown below?Check Your Understanding In considering the following schematic and the power supplied and consumed by a circuit, will a voltage source always provide power to the circuit, or can a voltage source consume power?Fig 3.0 shows a circuit containing two sources of e.m.f., each with their internal resistance. Determine the current in each branch of the network by using the superposition theorem.
- Consider 3 resistors with resistances 1.15 × 102 Ω, 2.1 kΩ, and 3.8 kΩ. What would be their resistance, Rs, in kilohms, if they were connected in series?What is the best estimate of the internal resistance r of a depleted (also called "flat") used battery?An idealized voltmeter is connected across the terminals of a 15.5 V battery, and a 71.0 Ω appliance is also connected across its terminals. If the voltmeter reads 10.6 V. How much power is being dissipated by the appliance? What is the internal resistance of the battery?
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