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When a conductor carries current, it means that charges (typically electrons) are in motion inside the conductor. A magnetic field exerts a force on these moving charges , not on stationary ones. This force is given by the Lorentz force law : 
This interaction causes the entire conductor to experience a mechanical force when placed in a magnetic field.
Ravi and Sita together can complete a piece of work in 150 days and 3 minutes, while Sita and Ramesh together can complete the same work in 90 days and ...
If 20 men or 12 boys can complete a job in 25 days, how long will it take for a team of 15 men and 18 boys to complete the same job? (Calculate approxim...
X can build a wall in 15 days, Y can build same wall in 25 days and Z can destroy the same wall in 30 days. If X & Y worked together for P days after th...
Ratio of the work done by P, Q and R in one day is 8:5:9 respectively. They all together can complete the work in 40 days. Q and R worked on it for 32 d...
‘A’ alone can do some work in 10 days. ‘B’ and ‘C’ together can do the same work in 4 days. If ‘B’ is half as efficient as ‘A’, then...
A does 2/5 of a work in 9 days. Then B joined him and they together completed the remaining work in 6 days. B alone can finish the whole work in
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‘A’ alone can complete a work in 17 days. ‘B’ alone can complete the same work in 34 days. If ‘A’ and ‘B’ work together for 5 days, then...
15 men can complete a piece of work in 5 days, while 20 women can complete it in 5 days. 8 men start working on the job & after working for 3 days, ...
Komal and Seema individually can complete a task in ‘5a’ hours and ‘7a’ hours respectively. If they together can complete (4/5)th of the work in...
A team of 40 men is assigned to finish a project within 24 days. They began the task simultaneously. To complete the project 6 days ahead of the planned...
