27. At 20°C, the carbon resistor in an electric circuit con- nected to a 5.0-V battery...
At 20°C, the carbon resistor in an electric circuit connected to a 7.3-V battery has a resistance of 1.8 ✕ 102 Ω. What is the current in the circuit when the temperature of the carbon rises to 75°C? mA
At 20°C, the carbon resistor in an electric circuit connected to a 4.2-V battery has a resistance of 2.3 ✕ 102 Ω. What is the current in the circuit when the temperature of the carbon rises to 83°C? Answer in mA.
At 20°C, the carbon resistor in an electric circuit connected to a 4.0 V battery has a resistance of 221 . What is the current in the circuit when the temperature ofthe carbon rises to 79°C?
2, (A) Sketch a circuit with a 10 V battery connected across a 20 Ω resistor. (B) Indicate the positive and negative poles of the battery. (C) Indicate the direction of positive current flow 3. How much current flows through your resistor in question (2)? 4. A certain wire has a resistance of 10 Q. (A) What is the resistance if twice as much length of wire is used instead? (B) What is the resistance if two such 10 Ω...
An ideal voltmeter V is connected to a 2.0 O resistor and a battery with emf 5.0 V and internal resistance 0.5 O as shown in the figure on the right. (a) What is the current in the 2.0 O resistor? (b) What is the terminal voltage of the battery? (c) What is the reading on the voltmeter? Explain your answers.
A series circuit consists of a 12 V battery, 11 Ohm resistor, 27 ohm resistor, and 36 Ohm resistor. What is the current flow through the 11 Ohm resistor?
A: When a 20 om resistor is connected across the terminals of a 12 V battery, the terminal voltage of the battery falls to 10 V. What is the internal resistance of the battery? C: The capacitor is initially uncharged. When the switch is closed to "a", current starts to flow.V=20.0V, C=1.02 muF If the current from the battery is initially 0.2 A, what is the time constant for this RC circuit? (Answer in seconds)
Consider the electric circuit shown in the figure. Assume that the voltage of the battery is V = 23.5 V, and the resistors are R1 = R2 = R3 = R4 = R5 = 2.00 Ω. What is the equivalent resistance of the circuit? What is the electric current flowing through resistor R3? Consider the electri = R4 = R5 = 2.00 2 circuit shown in the figure. Assume that the voltage of the battery is V = 23.5 V,...
The circuit consists of a 50V battery, a 20 ohm resistor, a low-resistance 25mH inductor, and a key. Find the rate at which current begins to rise when the key is closed, the current at the instant the rate of change of current is 400A/s, and the final steady current he circuit of Fig. 32-5 consists of a 5 T -V battery, a 20 Ω resistor key. Find the rate at which current begins change of current is 400 A/s,...
7. In the circuit shown, each battery has an emf of 9 V and each resistor has a resistance of 1 ?. By how much does the current through the left resistor change when the switch is closed? a) 0.500 A b) 1.00 A c 1.50A d) 2.00 A e) 2.50 A