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- A resistor is placed in a circuit with an adjustable voltage source. The voltage across and the current through the resistor and the measurements are shown below. Estimate the resistance of the resistor.Consider the circuit shown below. The terminal voltages of the batteries are shown, (a) Find the equivalent resistance of the circuit and the current out of the battery, (b) Find the current through each resistor, (c) Find the potential drop across each resistor, (d) Find the power dissipated by each resistor, (e) Find the total power supplied by the batteries.Shown below are the results of an experiment where four devices were connected across a variable voltage source. The voltage is increased and the current is measured. Which device, if any, is an ohmic device?
- What is the power in a circuit if a 30-V battery is connected to a 10-Ω resistor? Find the power loss in a given circuit diagram?What is the total capacitance, measured in microfarads (µF), perceived by the battery in the circuit depicted below?In the left figure, create two formulations/equations of the currents IT, I1, I2, & I3 using the conceptof KCL. On the other hand, create two formulations/equations of the given voltages using theconcept of KVL on the right figure.
- The terminal voltage of the battery in figure 4 is 16.6 V. What is the resistance R of the external resistor? What is the internal resistance r of the 18.0-V battery? Note: The figure is provided below.Ohm's law states that the electric current flowing through a conducting wire, I is directly proportional to the potential difference across its ends, V, provided its temperature stays unchanged. Draw a labelled circuit diagram to verify this law. Explain the function of each component on the circuit.A voltage 7 V is applied to a device of resistance R; and the current through the device is i. If thedevice obeys Ohm’s law, what will be the outcome if the voltage is increased to 14 V?
- A current of I = 3.7 A passes through the circuit shown, where R = 78 Ω. (a) In terms of R, I, and numeric values, write an expression for the voltage of the source, V. (b) What is the voltage, V in volts?What is the electric resistance (R3) of the circuit below if the electric current of 20A is flowing when connected to a 110V battery?The circuit in the figure has 5 resistors and 2 ideal batteries. What is the magnitude of the current in the 4-ohm resistor?