An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
An electric device delivering 15.0 A for 30 seconds results in a flow of approximately 2.81 x 10²¹ electrons. This is calculated using the relationship between current, charge, and the charge of a single electron. Therefore, the total charge of 450 coulombs translates to a vast number of individual electrons.
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To change sentences from direct speech to indirect speech, we must follow certain rules of tense changes, pronoun changes, and the removal of quotation marks. Let's look at each sentence:
The lady asked the shopkeeper if he had seen her brother in the bazaar.
Sarla asked Kamla if she would go there all alone.
Sohan asked Tom whether he had finished his homework.
The angry mother asked her son if he thought he was wiser than his father.
Teju asked his mother if the dinner was ready for everyone.
The policeman asked the stranger if he was Lakha, the notorious dacoit.
The teacher asked Geeta whether she had done all the sums.
The doctor asked the patient if he was not feeling well now.
Rama asked Sita if she would accompany him to the forest.
The students asked the teacher if he had marked their papers and if the result was good on the whole.
Leela asked me if I would tell her what it meant.
My friend asked me if I would dine with them that day.
I asked my class teacher if I might come in.
Suneeti asked Preeti if she could tell her the story of the poor woodcutter.
I asked my cousin if I should pay him a visit the next day.
The old nurse asked if there was nobody to look after the dear boy.
Draupadi asked if she saw men there or mere statues.
Suresh asked me if I would go to him all alone.
My father asked me if his breakfast was ready.
She asked me if I would help her do that sum.
Remember, in indirect speech:
Replace 'said to' with 'asked' in questions.
Change the pronouns correctly according to the context.
Adjust the tense if the reporting verb is in the past tense.
