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Electric Circuits
A cell of emf 16 volt and internal resisitance 0.9 ohm is connected to two resisitors 7 ohm and 3 ohm in parallel and a 5 ohm resistor in series .
a)Draw a circuit using the given information
b)the potential difference across the parallel combination
c)current through 7 ohm resistor
d)the lost volt
a)Draw a circuit using the given information
b)the potential difference across the parallel combination
c)current through 7 ohm resistor
d)the lost volt
Electric Circuits
the object falls 54 m in the first 3.0 sec. the acceleration due to gravity on the planet is?
Electric Circuits
1. the set of rules you should follow while working in a laboratory is called ------------
2. the term --------------refers to burns from hot liquid or steam
3. what is the current drawn by a 10 horse power kernel grinder from a 240 v- mains? (1 horse power= 746 watts)
4. classification of domestic cables is based on their ----------------
5. what is the current drawn by a 15 horse power kernel grinder from a 220 v- mains? (1 horse power = 746 watts)
2. the term --------------refers to burns from hot liquid or steam
3. what is the current drawn by a 10 horse power kernel grinder from a 240 v- mains? (1 horse power= 746 watts)
4. classification of domestic cables is based on their ----------------
5. what is the current drawn by a 15 horse power kernel grinder from a 220 v- mains? (1 horse power = 746 watts)
Electric Circuits
1. A 12.5 horse power(hp) electric motor draws a current of 15 A when connected to the mains. calculate the voltage requirement to drive the motor (1 hp = 746 w)
2. An auditorium is provided with the following appliances: two 600 W water dispensers, eight 90 W electric fans, fourteen 40 W lighting bulbs and two 300 W air conditioners. calculate the current drawn by the appliances and select the most suitable fuse for
3. The term 'short circuit' refers to
4. the unit of energy is in ----------------
5. the nonionising radiations cannot change the nature of atom, an example is
2. An auditorium is provided with the following appliances: two 600 W water dispensers, eight 90 W electric fans, fourteen 40 W lighting bulbs and two 300 W air conditioners. calculate the current drawn by the appliances and select the most suitable fuse for
3. The term 'short circuit' refers to
4. the unit of energy is in ----------------
5. the nonionising radiations cannot change the nature of atom, an example is
Electric Circuits
Forces of 5.28 N and 6.50 N act at right angles on a reddish-green block of mass 8.06 kg. How much acceleration occurs?
Electric Circuits
The half-life of a certain radioactive isotope is 32 hours. What fraction of the sample would remain after 16 huors? a. 0.50 b. 0.25 c. 0.62 d. 0.71
Electric Circuits
A potentiometer wire of length 100cm has a resistance of 10Ω. It is connected in series to to a resistance R and a cell of emf 2V and negligible internal resistance. A source of emf of 10mV is balanced by a length of 40cm of the potentiometer wire. What is the value of the resistance R? a. 200Ω b. 950Ω c. 2000Ω d. 790Ω
Electric Circuits
the power across a 75 ohm resistor is 90w find the value of the resistance to be connected in series with 75 ohm across a supply voltage of 120 v
Electric Circuits
When light enters a different medium, the amount that the light is bent as it enters the medium is determined by the medium's index of
Electric Circuits
Distinguish between the fundamental and derived quantities and give their S I units
