In the circuit shown, 30 Determine the following: 2v+ A. Magnitude and direction of the current B. The potential differences Vad, Ver and Vne 6 V 60
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- Power P0 = I0 V0 is delivered to a resistor of resistance R0. If the resistance is doubled (Rnew = 2R0) while the voltage is adjusted such that the current is constant, what are the ratios (a) Pnew/P0 and (b) Vnew/V0? If, instead, the resistance is held constant while Pnew = 2P0, what are the ratios (c) Vnew/V0, and (d) Inew/I0?A typical cell phone consumes an average of about 1.00 W of electrical power and operates on 3.80 V. (a) What average current does the phone draw from its battery? (b) Calculate the energy stored in a fully charged battery if the phone requires charging after 5.00 hours of use.A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?
- In the circuit shown, 3 0 Determine the following: 7 V 2 V+ A. Magnitude and direction of the current B. The potential differences Vzd, Ve and Vhe cf, 6 V+The resistance of the skin on a person's finger is typically about 10,000 N. How much voltage would be needed to cause a current of 0.001 A to flow into the finger? (This is about enough current to just be felt by most people.) Need Help? Read It Watch It MY N OTEC [-/2 Points] DETAILS OBINPHYS8 7.P.013.4. (a) In the figure the current in resistance 6 is i6 = 1.38 A and the resistances are R1 = R2 = R3 = 1.54 N, R4 = 17.7 N, R5 = 8.42 N, and R6 = 4.95 N. What is the emf of the ideal battery? 5. R R Rg R4 (b) In A certain parallel-plate capacitor is filled with a dielectric for which K = 6.24. The area of each plate is 67400 mm2, and the plates are separated by 1.85 mm. The capacitor will fail (short out and burn up) if the electric field between the plates exceeds 172 kN/C. What is the maximum energy that can be stored in the capacitor?
- A cylindrical copper cable 1.50 km long is connected acrossa 220.0 V potential difference. What should be its diameter so thatit produces heat at a rate of 90.0 W?IfI= 0.60 A in the circuit segment shown below, what is the potential difference Va – Vb? 100 122 102 Select one: а. 25 V b. 34 V c. 28 V d. 10 V е. 37 VPROBLEM 6: 2.5 N b + 4.5 V In the circuit shown, Determine the following: 6.2 V+ A. Magnitude and direction of the current h B. Potential differences Vac, Vaf and Vge 4 V+ 3.6 N C. Power delivered by each battery 7Ω
- In the figure, R1 = 100 2, R2 50 2, E1= 6 V, E2=5 V, and E3=4 V. Find (a) the current In in R1. (b) the current I2 in R2. (c) The potential difference between points a and b. %3D E3 Ez బో-2. At what rate is thermal energy generated in the 10-2 resistor? 10 2 30 2 30 V 5.0 2 5.0 2 Select one: a. 17.8 W b. 27 W С. 30 W d. 60 W e. 13 WTe-Learning Portal Courses - Reports e-Services ▼ Academic Departments - ETC - CIMS Salim During an experiment to verify Ohm's law, the voltage supplied and the current through a circuit are measured. [Voltage is measured in Volt (V) and current in Ampere (A)]. ww R on Battery The measured value of the current is I = 3.1 ± 0.2 A and that of the voltage is V = 14 0.5 V. The resistance of the circuit (in N) can be calculated using the formula, R = V/I, Calculate the, a) Resistance (in 2) = b) Fractional uncertainty in the resistance = c) Absolute uncertainty (in 2) in the resistance=