The figure below shows a light dependent resistor RLD connected in series to a 10 kO fixed re- sistor Ro. The ideal emf source establishes a constant potential difference of 5.0 V between its terminals. The switch is closed. The potential difference between points a and b is measured to be 10o mV. (a) Determine the total current through the emf device. (b) Is the value of RLD greater than, less than, or equal to Ro? Determine the ratio RLD/Ro. (c) The resistance of RLD depends on the amount of light falling on it and decreases with increasing levels of illumination. Suppose the measured potential difference between points a and b were to increase. Is this a signature of increasing illumination or decreasing illumination? Please explain.

Consider the arrangement shown in the figure below where R = 7.00 , l = 1.10 m, and B = 2.25 T. HINT R xx xxxx x xx x x x x xxxxxx xx xxxxxx x x xxx x xxxxxx xxxx xx (b) What power (in W) is delivered to the resistor? W tea B Fapp (a) Apply the motional emf equation in combination with Ohm's law. (b) Recall the expressions for the power delivered to a resistor. (c) Apply the expression for the magnetic force on a current-carrying wire. (d) Recall the expression P = Fv. Click the hint button again to remove this hint. (a) At what constant speed (in m/s) should the bar be moved to produce a current of 1.40 A in the resistor? m/s (c) What magnetic force (in N) is exerted on the moving bar? (Enter the magnitude.) N (d) What instantaneous power (in W) is delivered by the force Fapp on the moving bar? W

The figure below shows a capacitor, with capacitance C = 45.0 µF, and a resistor, with resistance R = 60.0 kN, connected in series to battery, with & = 15.0 V. The circuit has a switch, which is initially open. R (a) What is the circuit's time constant (in s)? (b) After the switch is closed for one time constant, how much charge (in C) is on the capacitor?

A 2.00-nF capacitor with an initial charge of 5.27 µC is discharged through a 2.47-k2 resistor. dQ (a) Calculate the current in the resistor 9.00 µs after the resistor is connected across the terminals of the capacitor. (Let the positive direction of the current be define such that > 0.) dt (b) What charge remains on the capacitor after 8.00 µs? (c) What is the (magnitude of the) maximum current in the resistor? A