How to write a physical experiment report Help to write a small physics experiment report. Must be a simple experiment

How to write a physical experiment report Help to write a small physics experiment report. Must be a simple experiment

Physical experiment: measuring resistance by volt ampere experiment record sheet: experiment equipment for measuring resistance by volt ampere method. Experiment steps: understand circuit components, experiment diagram, circuit diagram, connecting circuit. Experiment content: a) check preparation, connect circuit: close circuit key. B) change the resistance of rheostat, read and fill in the table

Exercises of electric power in grade two of junior high school

A DC motor, with coil resistance of 0.5 Ω, is connected to 12V power supply, and the current is 2A. How much electric energy does the motor consume when it works for one minute? How much electric energy is converted into mechanical energy?
1. In the home circuit, the physical quantity usually measured by the electric energy meter is ()
A. Electric power B. electric work C. voltage D. current (intensity)
2. A and B lamps with the same rated voltage are connected in series on the circuit, and a lamp is brighter than B lamp
Right ()
A. The rated power and actual power of lamp a are higher than that of lamp B. the rated power and actual power of lamp B are higher than that of lamp a
C. The rated power of a lamp is small, the actual power is large D. the rated power of B lamp is small, the actual power is large
3. The resistance of a certain electric heater is 220 ohm, and the current passing through it is 2 A. within 10 seconds, the resistance is 220 ohm
What is the heat released by the electric heater______
4. An electric lamp marked with "220v100w" works normally for 40 hours, and the consumed electric energy is
______ Kilowatt hour
5. Connect the "6v3w" and "6v1w" lamps in series into a certain circuit
There should be a voltage at both ends of the bulb_____ V. (filament resistance does not vary with temperature)
6. Connect a small bulb with a rated voltage of 4.8V and a constant resistance R in parallel in a certain circuit, and the lamp will turn off
The current in the main circuit is 1.2 A. if they are connected in series in another circuit, it is small
The actual power of the bulb is 1 / 4 of its rated power, and the power consumed by the constant resistance R is 0.24
W. what is the rating of the small bulb________ Watt. (assuming filament resistance does not change with temperature)
7.1 kwh is equal to 3.6 × 106 joules, and the annual power generation capacity of the Three Gorges small power station will be built soon
Up to 8.47 × 1010 kwh, equivalent to___________ coke
8. The normal working current of an oven is 5 A, the electric power is 1 kW, and the resistance of the oven is 0____
Oh, half an hour______ degree
9. There are two resistance wires. The ratio of their resistance is 2:1. Connect them in parallel and the voltage is
In the circuit of u, the ratio of heat released by them in the same time is ()
A.1:2 B.2:1 C.1:4 D.4:1
10. Xiaoming connects the A and B lamps with the rated voltage of 220 V in series with the power supply of 220 V and closes them
After the switch, a lamp lights up, B lamp does not light up, then: A and B two lamp in the current ratio is____ ; a
Lamp resistor____ Resistance of lamp B and voltage of lamp a_____ Voltage at both ends of lamp B (fill in "greater than
”Less than or equal to)
11. The panel of household electric energy meter (kilowatt hour meter) is marked with "3000 rpm / kWh", which can be accessed
When a "220v300w" electric appliance works normally, the turntable of the electric energy meter turns ()
A. 0 to B.5 to c.15 to d.30
12. If the two fixed value resistors r1r2 are connected with the power supply in some form, the consumption of R1 will be less
The electric power is 9 watts; if the two resistors are connected to the power supply after being replaced by another connection, R1 will be cancelled
The power consumption is 16 watts and the current through R2 is 4 A. then the power supply voltage and the resistance of r1r2
How big is each? (the supply voltage remains unchanged)
13. It is known that the resistance relationship between the two lamps L1 and L2 is r1p2
C. According to P = I2R, P1

Exercises of electric power in grade two of junior high school
According to your observation in your life, electronic watches, electric lights, transistor radios, electric irons, among these appliances, what's the largest and what's the smallest?

The largest electric iron the smallest electronic watch