The maximum current that a 2W, 80 kN resistor can safely conduct is: C. 40 kA D.25 μΑ A. 160 kA В.5 mA 10 V 12 V (+ 8 V V Figure A2 In the circuit in Figure A2, V is С. 10 V А. 30 V
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- A1. A hair blower contains a heating element which has a resistance of 57 Ω. This heating element is energized by a 220-V outlet. What is the current that flows in the heating element?a. 3.9 A b. 4.9 A c. 5.9 A d. 6.9 A A2. What will happen to the resistance of a material if the resistivity changed due to the increase of temperature?a. Increases b. Decreases c. remains the same d. zeroA light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light bulb in 3.8 min? Select one: a. 57.00 b. 45.60 С. 34.20 d. 41.80 O e. 68.40How much current will flow through a 10V battery with a 1000 resistor connected across its terminals? a. 1.0 A O b. 1000 A Ос. 10.0 A O d. 0.1 A
- A capacitor of capacitance C is connected to four resistors R = 62 R, = 4O R, =90 and R 60 %3D and a battery V= 36 V with an open %3! switch. R, R. R R. What is the voltage across R1 when the switch has just been closed? Select one: O a 21.6 V O b. 0V O c. 14.4 V O d. 36 V The following is a part of a circuit. The potential of V = 200 V is provided at point a that is connected to resistors = 40 2=60 and 3 =9 12:12 PM 5/13/2021 近B6A. What is the equivalent resistance between points a and b? B. If a potential difference of 30.0 V is applied between points a and b, what is the current in the 4.00-ohm resistor? c. If a potential difference of 30.0 V is applied between points a and b, what is the voltage across the 7.00-ohm resistor?
- If electrical energy costs 12 cents per kilowatt-hour, then how much does it cost to burn a 100-W light bulb for 24 h? Also, how much does it cost to operate an electric oven for 5.0 h if it carries a current of 20 A at 220 V? [SV E08 17.34] 9. light bulb cost А. 0.2652 dollars D. 0.3129 dollars В. 0.3318 dollars E. 0.3154 dollars С. 0.3476 dollars F. 0.2880 dollars /--/ 10. oven cost А. B. 2.248 dollars D. 2.236 dollars 2.640 dollars E. 3.171 dollars С. 2.317 dollars F. 2.855 dollars |--/The current in a resistor decreases by 8 A when the voltage applied across the resistor decreases from 41 V to 12 V. What is the resistance of the resistor (in Q)? Select one: OA. 3.11 ОВ. 6.62 OC.3.62 OD. 9.26 OE 14.39 ge Next page5. A resistor R₂=5.0 2 is mounted in parallel with a resistor R3 =7.0 2, and this combination is connected in series with a resistor R₁ 7.0 2 and a 24 Volts battery. What is the power dissipated in the R₂ resistor? Watts R₁ R₂ www- R3 vlt
- What is the internal resistance of the battery in the circuit? 0.6 A (A) (A) 12.50 2 (B) 11.50 2 C) 13.50 2 (D) 9.40 2 e.m.f d.g.e = 7.5 V 네가 3. 3.12The resistors in the circuit below have the following values: R₁ = 6.80 N, R₂ = 7.00 £, and R3 = 3.10 . The two batteries each have a voltage of 3.00 v. ww R3 ww E₂ (a) Find the current in through R3. .&₁ R₁ (b) How much power do the batteries deliver to R₂? W20. Identify the value of the resistor in the circuit below. A. 4.80 B. 130 22 C. 2.1 k9 D. 4.8 k92