Ohm's law - practice for 13 year olds - page 3 of 4
Number of problems found: 71
- Resistance 34891
What is the voltage in the circuit if its total resistance is 920 (Ohms) and the current is 250 mA? - The bulb
What is the resistance of a filament lamp when it is connected to a 9V battery and has a current of 120 mA? - Resistance 31421
What resistance must the electric element have to pass through a current of 4.4A at a voltage of 220V? - Individual 31411
On sources with voltage U = 12V, resistors R1 = 1 Ohm, R2 = 2 Ohm and R3 = 9 Ohm are connected in series. Determine the current I flowing from the source and the voltage drops U1, U2, and U3 on the individual resistors.
- Connected 31261
A stove with a current of 4.0A is connected to the 220V voltage. The current has been reduced to 2.4A due to a fault in the network. How much has the voltage in the socket dropped? - Two resistors
Two resistors, 20 Ω, and 60 Ω, are connected in series, and an external voltage of 400 V is connected to them. What are the electrical voltages on the respective resistors? Please comment! - Resistances 25271
Three resistors with resistances of 200 Ω, 400 Ω, and 600 Ω are connected in series (in series)—a current of 1.8 A flows through the first 200Ω resistor. a) What current passes through the second and what current through the third resistor? b) What are th - Kirchhoff's law
Two resistors with 100 Ω and 300 Ω resistors are connected in series. A current of 1.8 A passes through the first 100Ω resistor. What current flows through the second resistor? - Mains voltage
How much electric current flows through the appliance with a resistance of 40kΩ, connected to the mains voltage (230 V)?
- Resistance 25031
The current of 25 mA passes through the resistor with a resistance of 50Ω. How much voltage do we measure on it? - Resistance 25021
Calculate the resistance and power of the appliance through which a current of 20mA flows at the mains voltage (230 V). - Electric 25011
How much voltage do we measure on a 400Ω resistor when an electric current of 55 mA passes through it? - Closed circuit
There is a voltage source with U1 = 12 V in a closed circuit and with internal resistance, R1 = 0.2 Ω. The external resistance is R2 = 19.8 Ω. Find the electric current and terminal voltage. - Temperature 22861
The small bulb's socket has a reading of 6.3V/0.3A, which applies to its filament when the bulb is on. Determine the electrical resistance of the fiber under the given condition (the temperature of the fiber corresponds to about 2800°C)
- Electrical 19373
At a certain point, we measured a voltage of 3.74V at a current of 170mA at the terminals of a resistor connected to an electrical circuit. Calculate the resistance of the resistor. - Resistor 19013
The resistor has a value of 50 ohms, and a current of 120mA passes through it. What is the voltage across the resistor? - Resistance 18883
A current of 20mA passes through the resistor, which is connected to a voltage of 2.5V. What is the resistance of the resistor? - Connected 12261
At a voltage of 16 V between the ends of the resistor, a current of 200 mA flows through the resistor. What current will flow through the resistor when connected to 48 V? - Measurement 12251
The measurement showed that a current of 160 mA flows through the appliance at a voltage of 4 V. What current flows through this appliance when connected to a voltage of 12 V?
Do you have homework that you need help solving? Ask a question, and we will try to solve it.