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Electric Circuits
Place a 50 g load on the hanger and measure the extension. Add 50 g load on the hanger in about 5 steps
and measure the extension each time. Plot a graph between load and extension. Repeat this activity with
springs made of iron, copper and brass. Plot load-extension graph in each case compare these graphs.
Which of the above materials obey Hook’s law?
and measure the extension each time. Plot a graph between load and extension. Repeat this activity with
springs made of iron, copper and brass. Plot load-extension graph in each case compare these graphs.
Which of the above materials obey Hook’s law?
Electric Circuits
A problem gives me the resistance and the power, but how do I find the current? My teacher told me that I have to manipulate the formulas, but I have no clue how. May you help me?
Electric Circuits
A 240V mains has two secondary windings, one to provide 300V, the other to provide 6V. If there are 2000 turns on the primary, find the number of turns in the secondary windings.
Electric Circuits
How much time is needed to walk a distance of 95m at a constant speed of 3.75m/s?
Electric Circuits
Prepare a cell containing copper sulphate solution and two copper plates. Determine its internal resistance with the help of a potentiometer. New repeat the experiment by changing the concentration of the solution. For this remove about 50 ml CuSo4 solution and add similar amount of water in the cell. For the purpose of measurement you can use a doctor’s syringe. Do you find any change in the internal resistance of the cell? Also change the (i) plate area immersed in the electrolyte and (ii) separation between the plates. Write various factors on which internal resistance of a cell depends.
Electric Circuits
Find resistance in the circuit when 200mA current flows when connected to a battery having a potential difference of 12v
Electric Circuits
there is a composite rod of two metals l and 2l (l= 20cm) having the temperature at its ends 100 degree celsius and 60 degree celsius .their area of cross section is same but ratio of their thermal conductivity K1/K2=4 . find the temperature at the interface joining the 2 rods?
Electric Circuits
When a wire of length 5 m and radius 0.5 mm is stretched by a load of 49 N, the elongation produced in the wire is 0.1 cm. Find the energy stored per unit volume of the wire
Electric Circuits
Water is flowing down through the pipe shown in the drawing. Point A is 0.410 m higher than B. The speed of the water at A and B are vA = 5.00 m/s and vB = 3.86 m/s. Determine the difference PB - PA in pressures between B and A. The density of water is 1.00 × 103 kg/m3.
Electric Circuits
Tones of 650 and 800 Hz are sounded simultaneously at high intensity levels. Determine the frequencies of several low-order (m and n value up to 3) sum and difference tones and state whether each would be likely to be audible. (Be sure to consider masking.)
